I don’t know if it matters , but i had a sRGB icc file selected in the output profile module i guess.
I use Elle’s v4 profiles and export to linear (g1). Do my downsizing in an external app and that converts to regular sRGB trc.
That’s also where i export to rec2020 linear , with Elle’s profiles … but since filmic can’t give a good preview of the rec2020 output , i try sRGB more these days.
(Still frustrated by the lack of filmic softproofing… might actually dive into the code myself ).